I did the math wrong. Double the # for what you can expect. 144 in 4x4? So 4" rw cubes packed tight? Well, for certain you have to go single cola. If you're planning perpetual, you need to consider that the roots will weave together and be problematic where the batches come together. Check if 4-2x2 trays will fit so you keep them seperate or take a sharp knife and run it between the batches a few times a week so you're pruning a few roots at a time rather than tearing up a bunch late in the cycle. If you're planning to do it all in one run, I don't envy you come harvest time. That's a lot of manicuring, but I guess once every two months is not so bad. I'd also suggest very little veg time. Depending on your clone success rate, you'll cut about 200, root them, then veg just until they start to show growth. I'd start them when the others are halfway through bloom, assuming an 8 week strain. You'll work it out, I'm sure, just takes time and attention. Best of Luck